Performance Evaluation And Development Analysis Of Cng/gasoline Double Fuel Vehicles

In recent years,government efforts to improve environmental pollution,and improve air quality as a key task.Motor vehicle emission is one of the important factors that affect the environment of Beijing.Now,the development of natural gas vehicles have not been unified understanding,especially with the launch of the"Automobile industry adjustment and revitalization plan"this year,focusing on promotion of hybrid vehicles,pure electric vehicles,fuel cell vehicles and other energy-saving and new energy vehicles in large and medium-sized city,the prospect of compressed natural gas has become more uncertain.Therefore,as a member of the clean fcuel vehicles,the future development of natural gas vehicles go from here,need to be clear.The development target of domestic natural gas vehicles is mainly buses and taxis.Most of it is converted directly from gasoline vehicles to dual fuel vehicles.With the international automotive emission control standards become increasingly stringent,cars which based on the modified or improved development of dual fuel or dual fuel engine have been unable to meet regulatory requirements.If the use of such vehicles,improper maintenance,the improvement of its emissions is not obvious,and some even without improvement or even worse.Therefore,the development of gas vehicles in the future should focus on the use of advanced technology of a single fuel gas vehicle,its development prospects depend on the continuous improvement of China's natural gas vehicle technology.A test system for testing the emission of gaseous pollutants,particulate matter,CO2,fuel consumption and dynamic performance of CNG-gasoline dual fuel vehicles was constructed,which based on national,Beijing and the European Union related light vehicle standards.At the same time,the test method,the main equipment parameters,working principle,the calculation method of gaseous pollutant emissions,the fuel consumption and the calculation method of particulate matter are described.And finally,we choose the car for the experiment tests.In this paper,through the analysis of the domestic and foreign development experiences and policy support for the development of natural gas vehicles.And then5taking the example to analyze that the natural gas vehicle has the advantages of environmental protection,economy and safety,which provides a new way to solve the air pollution in Beijing city.